diff --git a/test/functional/rpc_invalid_address_message.py b/test/functional/rpc_invalid_address_message.py
index 59d2f55fc1..18d85d6770 100755
--- a/test/functional/rpc_invalid_address_message.py
+++ b/test/functional/rpc_invalid_address_message.py
@@ -49,7 +49,7 @@ class InvalidAddressErrorMessageTest(BitcoinTestFramework):
         self.test_validateaddress()
 
         if self.is_wallet_compiled():
-            self.init_wallet(0)
+            self.init_wallet(node=0)
             self.test_getaddressinfo()
 
 
diff --git a/test/functional/test_framework/test_framework.py b/test/functional/test_framework/test_framework.py
index 6aa7a4a53c..76d7a5bfed 100755
--- a/test/functional/test_framework/test_framework.py
+++ b/test/functional/test_framework/test_framework.py
@@ -469,12 +469,12 @@ class BitcoinTestFramework(metaclass=BitcoinTestMetaClass):
 
     def import_deterministic_coinbase_privkeys(self):
         for i in range(len(self.nodes)):
-            self.init_wallet(i)
+            self.init_wallet(node=i)
 
-    def init_wallet(self, i):
-        wallet_name = self.default_wallet_name if self.wallet_names is None else self.wallet_names[i] if i < len(self.wallet_names) else False
+    def init_wallet(self, *, node):
+        wallet_name = self.default_wallet_name if self.wallet_names is None else self.wallet_names[node] if node < len(self.wallet_names) else False
         if wallet_name is not False:
-            n = self.nodes[i]
+            n = self.nodes[node]
             if wallet_name is not None:
                 n.createwallet(wallet_name=wallet_name, descriptors=self.options.descriptors, load_on_startup=True)
             n.importprivkey(privkey=n.get_deterministic_priv_key().key, label='coinbase', rescan=True)
diff --git a/test/functional/wallet_backup.py b/test/functional/wallet_backup.py
index 9371cee0f5..5e188dce4c 100755
--- a/test/functional/wallet_backup.py
+++ b/test/functional/wallet_backup.py
@@ -135,9 +135,9 @@ class WalletBackupTest(BitcoinTestFramework):
         assert os.path.exists(wallet_file)
 
     def init_three(self):
-        self.init_wallet(0)
-        self.init_wallet(1)
-        self.init_wallet(2)
+        self.init_wallet(node=0)
+        self.init_wallet(node=1)
+        self.init_wallet(node=2)
 
     def run_test(self):
         self.log.info("Generating initial blockchain")
diff --git a/test/functional/wallet_listdescriptors.py b/test/functional/wallet_listdescriptors.py
index b6c82e64e9..166443c525 100755
--- a/test/functional/wallet_listdescriptors.py
+++ b/test/functional/wallet_listdescriptors.py
@@ -23,7 +23,7 @@ class ListDescriptorsTest(BitcoinTestFramework):
         self.skip_if_no_sqlite()
 
     # do not create any wallet by default
-    def init_wallet(self, i):
+    def init_wallet(self, *, node):
         return
 
     def run_test(self):